Tapping tooth pain after rct and crown.

I have constant burning pain in lower jaw under ear, neck for more than 6 months. Went to dentist and he suspect a tooth root Fracture in lower molar#46. He want me to extract it. That tooth was sensitive and hurts to bite on bite paper and tapping. He took CBCT and suspect a root fracture from it. I went to Endodontist and he couldn't see the fracture. X-rays were normal. He did cold and bite test. That tooth was sensitive and hurts to bite on one spot and sensitive to cold spray.So the Endo said rct. I did rct 2 months back.Still same symptoms in jaw and neck. Had temporary crown 3 weeks back and permanent crown last week. The same symptoms still. Along with burning pain in jaw and neck,I have constant sore pain in that tooth#46 and gum since this crown placed. Went back to dentist,he tapped on that tooth and it was painful. He gave a bite paper to bite on to check for bites.Biting on it hurts and feel tender. What does mean if it hurts for tapping& biting?  do I need to extract it?